CN110067510B - Push-against type rotary steering drilling tool - Google Patents
Push-against type rotary steering drilling tool Download PDFInfo
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- CN110067510B CN110067510B CN201910450650.9A CN201910450650A CN110067510B CN 110067510 B CN110067510 B CN 110067510B CN 201910450650 A CN201910450650 A CN 201910450650A CN 110067510 B CN110067510 B CN 110067510B
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- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a push-leaning type rotary guide drilling tool which mainly comprises a mandrel, an outer cylinder, a string bearing, a bearing positioning sleeve, a starting piece, a wedge-shaped cylinder, a control cylinder, a spring, an upper disc valve, a lower disc valve, a sliding block limiting cylinder, a telescopic block, a moving piece, a stop block, a bypass valve, a sealing sleeve, a positioning sleeve and a sealing element. The starting piece and the control barrel, the wedge barrel and the control barrel are matched by wedge surfaces, the upper disc valve is connected to the lower end of the control barrel through a spline, when the pump pressure is increased, the starting piece moves downwards, the control barrel drives the upper disc valve to rotate, the radial channel holes of the upper disc valve and the lower disc valve are communicated, drilling fluid enters and pushes the sliding block to move downwards, the mandrel is communicated with the radial channel hole of the outer barrel d, and the telescopic block moves outwards under the pressure action of the drilling fluid, so that the guiding function is realized. The push-type rotary steering drilling tool is simple and reliable in structure, can control the track of a well hole, and is suitable for structural wells such as horizontal wells and highly deviated wells.
Description
Technical Field
The invention relates to a novel drilling tool used in the field of petroleum and natural gas exploration and development, in particular to a rotary steering drilling tool capable of realizing deflection control by adjusting the pressure of drilling fluid.
Background
The rotary steering drilling system is a tool system formed by combining a downhole closed-loop reducing stabilizer and a measurement and transmission instrument (MWD/L WD), automatically and flexibly adjusts well inclination and orientation in a rotary steering drilling mode, can greatly improve drilling speed, reduce drilling accidents, improve drilling safety and reduce drilling cost, has very high track control precision, and is very suitable for the requirements of special process well steering drilling such as the ultra-deep well, the high-difficulty directional well, the horizontal well, the large displacement horizontal well, the horizontal branch well and the like for developing special oil reservoirs at present.
The rotary steerable drilling technology requires reliability and good service performance in the aspects of ground control, signal transmission, signal measurement, downhole control and rotary steerable tools, and finally forms a rotary steerable drilling tool system. However, as the number and the proportion of deep wells, ultra-deep wells, special process wells, and high-temperature and high-pressure wells increase and cost-effectiveness is driven, people are continuously confronted with more new technical difficulties, such as technical difficulty of signal transmission, technical difficulty of signal detection, and the like. Moreover, due to the reasons of high research and development cost, high processing difficulty, short service life and the like, at present, no independently researched and developed mature product exists in China, the technology is short, and the technology is also one of the characteristics that the development of the petroleum industry in China lags behind those of the strong petroleum countries such as the United states and the like. Therefore, from the development of the whole petroleum industry, the research and development of the technology have extremely important significance, and can meet the urgent requirements of high-efficiency development of unconventional oil and gas resources such as shale gas and dense gas on the basis of ensuring economic benefits, so that the development of a rotary guide tool has important research value and wide market prospect, and is worthy of deep research and practice.
Disclosure of Invention
In order to explore and solve the problems of realizing the track control of the well hole and reducing the cost of the rotary steering tool in the background technology, the invention provides a push type rotary steering drilling tool. When the push-type rotary steering drilling tool works, if the steering function is not needed, no action is generated inside the tool; when the directional drilling is needed, the control of the guiding function is realized by adjusting the pressure of the drilling fluid, the drilling fluid forms shunting in the tool by changing a flow passage of the drilling fluid, and the action of the guiding telescopic block is controlled to realize the function of the directional drilling.
The technical scheme of the invention is as follows: the push-type rotary steering drilling tool mainly comprises a mandrel, a control unit, an execution unit and an auxiliary unit; the control unit comprises a sealing sleeve a, an outer cylinder a, a sealing sleeve a, a positioning sleeve a, a tandem bearing a, a bearing outer ring positioning sleeve a, a bearing inner ring positioning sleeve a, a sealing ring b, an outer cylinder b, a starting piece, a sealing ring c, a wedge-shaped cylinder, a control cylinder, a spring a, an outer cylinder c, an upper disc valve and a lower disc valve, wherein the sealing sleeve a, the positioning sleeve a, the tandem bearing a, the bearing outer ring positioning sleeve a and the bearing inner ring positioning sleeve a are sequentially arranged in a cavity formed by the upper parts of the core shaft and the outer cylinder a from top to bottom; the upper end of the outer cylinder b is connected with the lower end of the outer cylinder a through threads; the wedge-shaped barrel is fixed on the outer barrel b through threaded connection; the starting piece, the sealing ring c, the wedge-shaped barrel, the control barrel and the spring a are sequentially arranged in the outer barrel b from top to bottom; the spring a is arranged in a cavity between the control cylinder and the outer cylinder b; the outer cylinder c is connected to the lower end of the outer cylinder b through threads; the control cylinder is connected with the upper disc valve through a spline; the upper disc valve and the lower disc valve are sequentially arranged in the outer cylinder c from top to bottom, and the lower disc valve and the outer cylinder c are circumferentially positioned through 6 support legs; 3 axial channel holes are uniformly distributed at the lower end of the outer barrel c along the circumference; the executing unit comprises an outer barrel d, a sealing block a, a sliding block limiting barrel, a spring b, a sealing block b, a sealing ring d, a telescopic block, a moving member, a stop block, a spring c and a bypass valve, wherein the outer barrel d is connected to the lower end of the outer barrel c through threads; 3 sliding blocks are uniformly arranged on the sliding block limiting cylinder along the circumferential direction at an angle of 120 degrees, and the lower part of each sliding block is provided with a radial channel hole; mounting the spring b at the front end of the sliding block, and matching the outer cylinder d with the sliding block; the moving piece is connected to the telescopic block through threads, the stop block is connected to the outer barrel d through threads, and the spring c is installed between the moving piece and the stop block; the bypass valve is connected to a drainage channel hole of the outer barrel d through threads; the auxiliary unit comprises a bearing outer ring positioning sleeve b, a bearing inner ring positioning sleeve b, a string bearing b, a sealing sleeve b, a positioning sleeve b, an outer cylinder e and a sealing ring e, wherein the bearing outer ring positioning sleeve b, the bearing inner ring positioning sleeve b, the string bearing b, the sealing sleeve b and the positioning sleeve b are sequentially arranged in an annular channel at the lower part of the outer cylinder d from top to bottom; the outer cylinder e is connected to the lower end of the outer cylinder d through threads; when the push-type rotary steering drilling tool works, if the steering drilling is not needed, drilling fluid enters a lower drilling tool through the mandrel, and the circulation of the drilling fluid under the normal drilling condition is completed; when the guiding drilling is needed, the pump pressure is increased, the starting piece moves downwards under the action of high-pressure drilling hydraulic pressure, the control cylinder is pushed to drive the upper disc valve to rotate, the upper disc valve is communicated with the axial channel hole of the lower disc valve, drilling fluid enters and pushes the sliding block to move downwards, the central shaft is communicated with the radial channel hole of the outer cylinder d, and the telescopic block moves outwards under the action of the pressure of the drilling fluid, so that the guiding function is realized; when the pump pressure is increased again, the control cylinder drives the upper disc valve to rotate to cut off the communication with the lower disc valve, when the sliding block moves upwards to the upper limit position, the radial channel hole of the outer cylinder d is communicated with the sliding groove of the sliding block, drilling fluid is discharged from the bypass valve, the telescopic block is retracted, the tool is reset, and the normal drilling function is realized.
6 radial channel holes are uniformly distributed in the upper part of the mandrel at an angle of 60 degrees along the circumference, 2 radial channel holes are uniformly distributed in the middle part along the circumference, and 3 radial channel holes are equidistantly distributed in the lower part along the circumference; the spring a, the spring b and the spring c need to exert certain pre-pressure during installation; the center of the upper disc valve is of an internal spline structure, 2 axial channel holes distributed in 180 degrees are formed in the circumference of the upper disc valve, 3 axial channel holes are formed in the circumference of the lower disc valve at equal intervals, and the cross-sectional area of the axial channel holes of the upper disc valve is larger than that of the axial channel holes of the lower disc valve; 2 radial holes are uniformly distributed on the lower part of the control cylinder along the circumference, and an annular space communicated with the 2 radial holes is formed in the control cylinder along the circumference; 3 radial channel holes are uniformly distributed at the lower part of the sliding block limiting cylinder along the circumferential direction, and an annular space communicated with the 3 radial holes is formed in the sliding block limiting cylinder along the circumference.
The invention has the beneficial effects that: (1) the guiding drilling control is realized by regulating and controlling the pressure of the drilling fluid, the operation is simple, the function is reliable, and the stable guiding function can be realized; (2) the control of the guide telescopic block is realized by controlling the diversion channel of the drilling fluid, the structure is simple, and the control of the deflection angle of the guide tool can be reliably realized; (3) through setting up 3 flexible pieces of direction, can realize azimuth control on a large scale, make the application scope of instrument wider.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a sectional view a-a of fig. 1 of the present invention.
Fig. 3 is a cross-sectional view B-B of fig. 1 of the present invention.
Fig. 4 is a schematic view of the structure of the actuator.
FIG. 5 is a schematic structural view of a wedge cylinder.
Fig. 6 is a schematic structural view of the control cartridge.
Fig. 7 is a schematic structural view of the upper disc valve.
Fig. 8 is a schematic view of the structure of the lower disk valve.
Fig. 9 is a schematic view of the structure of the slider.
Fig. 10 is a schematic structural view of a slider limiting cylinder.
In the upper diagram: 1. the sliding block type hydraulic pump comprises a mandrel, 2, sealing rings a, 3, outer cylinders a, 4, sealing sleeves a, 5, positioning sleeves a, 6, string bearings a, 7, bearing outer ring positioning sleeves a, 8, bearing inner ring positioning sleeves a, 9, sealing rings b, 10, outer cylinders b, 11, a starting piece, 12, sealing rings c, 13, wedge-shaped cylinders, 14, a control cylinder, 15, springs a, 16, outer cylinders c and 17, an upper disc valve, 18, a lower disc valve, 19, outer cylinders d and 20, sealing blocks a, 21, a sliding block, 22, a sliding block limiting cylinder, 23, springs b and 24, sealing blocks b and 25, sealing rings d and 26, a telescopic block, 27, a moving piece, 28, a stop block, 29, springs c and 30, a bypass valve, 31, bearing outer ring positioning sleeves b and 32, bearing inner ring positioning sleeves b and 33, string bearings b and 34, sealing sleeves b and 35, positioning sleeves b and 36, and outer cylinders e and 37, sealing rings.
Detailed Description
Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments shown and described in the drawings are merely exemplary and are intended to illustrate the principles and spirit of the invention, not to limit the scope of the invention.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Referring to the attached drawings, the push-type rotary steerable drilling tool comprises a mandrel 1, a control unit, an execution unit and an auxiliary unit; the control unit comprises a sealing ring a2, an outer cylinder a3, a sealing sleeve a4, a positioning sleeve a5, a tandem bearing a6, a bearing outer ring positioning sleeve a7, a bearing inner ring positioning sleeve a8, a sealing ring b9, an outer cylinder b10, a starting piece 11, a sealing ring c12, a wedge-shaped cylinder 13, a control cylinder 14, a spring a15, an outer cylinder c16, an upper disc valve 17 and a lower disc valve 18, wherein the sealing sleeve a4, the positioning sleeve a5, the tandem bearing a6, the bearing outer ring positioning sleeve a7 and the bearing inner ring positioning sleeve a8 are sequentially arranged in a cavity formed by the upper parts of the core shaft 1 and the outer cylinder a3 from top to bottom; the upper end of the outer cylinder b10 is connected with the lower end of the outer cylinder a3 through threads; the wedge barrel 13 is fixed on the outer barrel b10 through threaded connection; the starting piece 11, the sealing ring c12, the wedge-shaped barrel 13, the control barrel 14 and the spring a15 are sequentially arranged in the outer barrel b10 from top to bottom; the spring a15 is installed in the cavity between the control cylinder 14 and the outer cylinder b 10; the outer cylinder c16 is connected with the lower end of the outer cylinder b10 through threads; the control cylinder 14 is connected with the upper disc valve 17 through a spline; the upper disc valve 17 and the lower disc valve 18 are sequentially installed in the outer cylinder c16 from top to bottom, and the lower disc valve 18 and the outer cylinder c16 are circumferentially positioned through 6 support legs; 3 axial channel holes are uniformly distributed at the lower end of the outer cylinder c16 along the circumference; the executing unit comprises an outer cylinder d19, a sealing block a20, a sliding block 21, a sliding block limiting cylinder 22, a spring b23, a sealing block b24, a sealing ring d25, a telescopic block 26, a moving member 27, a stop 28, a spring c29 and a bypass valve 30, wherein the outer cylinder d19 is connected to the lower end of the outer cylinder c16 through threads; 3 sliding blocks 21 are uniformly arranged on the sliding block limiting cylinder 22 along the circumferential direction at an angle of 120 degrees, and a radial channel hole is formed in the lower part of each sliding block 21; the spring b23 is arranged at the front end of the slide block 21, and the outer cylinder d19 is matched with the slide block 21; the moving member 27 is connected to the telescopic block 26 through screw threads, the stop 28 is connected to the outer cylinder d19 through screw threads, and the spring c29 is installed between the moving member 27 and the stop 28; the bypass valve 30 is screwed at the drain passage hole of the outer cylinder d 19; the auxiliary unit comprises a bearing outer ring positioning sleeve b31, a bearing inner ring positioning sleeve b32, a string bearing b33, a sealing sleeve b34, a positioning sleeve b35, an outer cylinder e36 and a sealing ring e37, wherein the bearing outer ring positioning sleeve b31, the bearing inner ring positioning sleeve b32, the string bearing b33, the sealing sleeve b34 and the positioning sleeve b35 are sequentially arranged in an annular channel at the lower part of the outer cylinder d19 from top to bottom; the outer cylinder e36 is connected with the lower end of the outer cylinder d19 through threads; when the push-type rotary steering drilling tool works, if the steering drilling is not needed, drilling fluid enters a lower drilling tool through the mandrel 1 to complete the circulation of the drilling fluid under the normal drilling condition; when the guiding drilling is needed, the pump pressure is increased, the starting piece 11 moves downwards under the action of high-pressure drilling hydraulic pressure, the control cylinder 14 is pushed to drive the upper disc valve 17 to rotate, the axial channel holes of the upper disc valve 17 and the lower disc valve 18 are communicated, drilling fluid enters and pushes the sliding block 21 to move downwards, the mandrel 1 is communicated with the radial channel hole of the outer cylinder d19, and the telescopic block 26 moves outwards under the action of the pressure of the drilling fluid, so that the guiding function is realized; when the pump pressure is increased again, the control cylinder 14 drives the upper disk valve 17 to rotate to cut off the communication with the lower disk valve 18, and the slide block 21 moves upwards to the upper limit position, the radial channel hole of the outer cylinder d19 is communicated with the slide groove of the slide block 21, drilling fluid is discharged from the bypass valve 30, the telescopic block 26 is retracted, the tool is reset, and the normal drilling function is realized.
The upper part of the mandrel 1 is uniformly provided with 6 radial channel holes at 60 degrees along the circumference, the middle part is uniformly provided with 2 radial channel holes along the circumference, and the lower part is provided with 3 radial channel holes along the circumference at equal intervals.
The spring a15, the spring b23 and the spring c29 all need to exert certain pre-pressure during installation.
The center of the upper disc valve 17 is of an internal spline structure, and 2 axial channel holes distributed at 180 degrees are formed along the circumference; the lower disk valve 18 is provided with 3 axial channel holes at equal intervals along the circumference; the cross-sectional area of the axial passage hole of the upper disc valve 17 is larger than that of the axial passage hole of the lower disc valve 18.
2 radial holes are uniformly distributed on the lower part of the control cylinder 14 along the circumference, and an annular space communicated with the 2 radial holes is formed in the control cylinder 14 along the circumference; 3 radial passage holes are uniformly distributed at the lower part of the slide block limiting cylinder 22 along the circumferential direction, and an annular space communicated with the 3 radial holes is formed in the slide block limiting cylinder 22 along the circumferential direction.
Claims (5)
1. A push-against rotary steerable drilling tool, characterized in that: the push type rotary steering drilling tool comprises a mandrel (1), a control unit, an execution unit and an auxiliary unit; the control unit comprises a sealing ring a (2), an outer cylinder a (3), a sealing sleeve a (4), a positioning sleeve a (5), a string bearing a (6), a bearing outer ring positioning sleeve a (7), a bearing inner ring positioning sleeve a (8), a sealing ring b (9), an outer cylinder b (10), a starting part (11), a sealing ring c (12), a wedge-shaped cylinder (13), a control cylinder (14), a spring a (15), an outer cylinder c (16), an upper disc valve (17) and a lower disc valve (18), wherein the sealing sleeve a (4), the positioning sleeve a (5), the string bearing a (6), the bearing outer ring positioning sleeve a (7) and the bearing inner ring positioning sleeve a (8) are sequentially arranged in a cavity formed by the upper parts of a mandrel (1) and the outer cylinder a (3) from top to bottom; the upper end of the outer cylinder b (10) is connected with the lower end of the outer cylinder a (3) through threads; the wedge-shaped barrel (13) is fixed on the outer barrel b (10) through threaded connection; the starting piece (11), the sealing ring c (12), the wedge-shaped cylinder (13), the control cylinder (14) and the spring a (15) are sequentially arranged in the outer cylinder b (10) from top to bottom; the spring a (15) is arranged in a cavity between the control cylinder (14) and the outer cylinder b (10); the outer cylinder c (16) is connected to the lower end of the outer cylinder b (10) through threads; the control cylinder (14) is connected with the upper disc valve (17) through a spline; the upper disc valve (17) and the lower disc valve (18) are sequentially installed in the outer cylinder c (16) from top to bottom, and the lower disc valve (18) and the outer cylinder c (16) are circumferentially positioned through 6 support legs; 3 axial channel holes are uniformly distributed at the lower end of the outer cylinder c (16) along the circumference; the executing unit comprises an outer cylinder d (19), a sealing block a (20), a sliding block (21), a sliding block limiting cylinder (22), a spring b (23), a sealing block b (24), a sealing ring d (25), a telescopic block (26), a moving member (27), a stop block (28), a spring c (29) and a bypass valve (30), wherein the outer cylinder d (19) is connected to the lower end of the outer cylinder c (16) through threads; 3 sliding blocks (21) are 120 along the circumferential direction0The sliding blocks are uniformly arranged on the sliding block limiting cylinder (22), and the lower part of the sliding block (21) is provided with a radial channel hole; a spring b (23) is arranged at the front end of the sliding block (21), and then the outer cylinder d (19) is matched with the sliding block (21); the moving piece (27) is connected to the telescopic block (26) through threads, the stop block (28) is connected to the outer cylinder d (19) through threads, and the spring c (29) is installed between the moving piece (27) and the stop block (28); the bypass valve (30) is connected to a drainage channel hole of the outer cylinder d (19) through threads; the auxiliary unitThe device comprises a bearing outer ring positioning sleeve b (31), a bearing inner ring positioning sleeve b (32), a string bearing b (33), a sealing sleeve b (34), a positioning sleeve b (35), an outer cylinder e (36) and a sealing ring e (37), wherein the bearing outer ring positioning sleeve b (31), the bearing inner ring positioning sleeve b (32), the string bearing b (33), the sealing sleeve b (34) and the positioning sleeve b (35) are sequentially arranged in an annular channel at the lower part of the outer cylinder d (19) from top to bottom; the outer cylinder e (36) is connected to the lower end of the outer cylinder d (19) through threads; when the push-type rotary steering drilling tool works, if the steering drilling is not needed, drilling fluid enters a lower drilling tool through the mandrel (1) to complete the circulation of the drilling fluid under the normal drilling condition; when the guide drilling is needed, the pump pressure is increased, the starting piece (11) moves downwards under the action of high-pressure drilling hydraulic pressure, the control cylinder (14) is pushed to drive the upper disc valve (17) to rotate, so that the upper disc valve (17) is communicated with the axial channel hole of the lower disc valve (18), drilling fluid enters and pushes the sliding block (21) to move downwards, the mandrel (1) is communicated with the radial channel hole of the outer cylinder d (19), and the telescopic block (26) moves outwards under the action of the drilling fluid pressure, so that the guide function is realized; when the pump pressure is increased again, the control cylinder (14) drives the upper disk valve (17) to rotate to cut off the communication with the lower disk valve (18), when the sliding block (21) moves upwards to the upper limit position, the radial channel hole of the outer cylinder d (19) is communicated with the sliding groove of the sliding block (21), drilling fluid is discharged from the bypass valve (30), the telescopic block (26) is retracted, the tool is reset, and the normal drilling function is realized.
2. A push-type rotary steerable drilling tool according to claim 1, wherein: the upper part of the mandrel (1) is 60 percent along the circumference06 radial passage holes are uniformly distributed, 2 radial passage holes are uniformly distributed in the middle along the circumferential direction, and 3 radial passage holes are equidistantly distributed in the lower part along the circumferential direction.
3. A push-type rotary steerable drilling tool according to claim 1, wherein: the spring a (15), the spring b (23) and the spring c (29) need to exert certain pre-pressure during installation.
4. A push-type rotary steerable drilling tool according to claim 1, wherein: what is needed isThe center of the upper disc valve (17) is of an internal spline structure, and 2 180 parts are arranged along the circumference0Distributed axial passage holes; the lower disc valve (18) is provided with 3 axial channel holes at equal intervals along the circumference; the cross-sectional area of the axial passage hole of the upper disc valve (17) is larger than that of the axial passage hole of the lower disc valve (18).
5. A push-type rotary steerable drilling tool according to claim 1, wherein: 2 radial holes are uniformly distributed on the lower part of the control cylinder (14) along the circumference, and an annular space communicated with the 2 radial holes is formed in the control cylinder (14) along the circumference; 3 radial passage holes are uniformly distributed at the lower part of the slide block limiting cylinder (22) along the circumferential direction, and an annular space communicated with the 3 radial holes is formed in the slide block limiting cylinder (22) along the circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910450650.9A CN110067510B (en) | 2019-05-28 | 2019-05-28 | Push-against type rotary steering drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450650.9A CN110067510B (en) | 2019-05-28 | 2019-05-28 | Push-against type rotary steering drilling tool |
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| CN110067510A CN110067510A (en) | 2019-07-30 |
| CN110067510B true CN110067510B (en) | 2020-07-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725649A (en) * | 2019-12-09 | 2020-01-24 | 长江大学 | Push-leaning type rotary guiding tool |
| CN111270992B (en) * | 2020-02-13 | 2020-10-27 | 中国石油天然气集团有限公司 | Guide unit for static pushing type rotary guide tool |
| CN112065279B (en) * | 2020-09-27 | 2022-01-11 | 西南石油大学 | Mechanical rotary guiding tool |
| CN112360350B (en) * | 2020-12-10 | 2022-01-04 | 西南石油大学 | Mechanical rotary guiding drilling tool |
| CN112627732B (en) * | 2020-12-21 | 2023-03-24 | 中煤科工集团重庆研究院有限公司 | Controllable upper disc valve mechanism of automatic vertical drilling system |
| CN115492523B (en) * | 2022-10-20 | 2024-07-12 | 中国地质科学院 | Full-mechanical rotary steering drilling tool |
| CN115538940B (en) * | 2022-10-27 | 2023-06-20 | 西南石油大学 | Full-rotation guiding drilling device |
| CN117231126B (en) * | 2023-09-24 | 2024-04-30 | 西南石油大学 | Oil-gas well borehole track control device and method |
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| CN110067510A (en) | 2019-07-30 |
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